Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 10,000 | $2 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 10,000 | $1 | $135.17 | $121.05 - $150.28 |
| Q4 2024 | 108,923 | $17 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 113,502 | $22 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 123,785 | $29 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 134,068 | $29 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 160,480 | $42 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 160,480 | $41 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 176,826 | $50 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 177,126 | $49 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 177,004 | $49 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 184,648 | $49,301 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 117,248 | $23,912 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 111,353 | $23,451 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 103,053 | $24,724 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 103,202 | $29,205 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 97,523 | $33,769 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 138,518 | $38,750 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 138,017 | $33,795 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 137,163 | $38,910 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 151,420 | $40,512 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 110,771 | $35,046 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 109,904 | $32,612 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 176,710 | $41,142 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 176,556 | $41,291 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 180,000 | $42,548 | $314.89 | $216.12 - $344.00 |